Archive for May, 2010

Super-Resolution Micrograph Reconstruction by Nonlocal-Means Applied to HAADF-STEM

May 31, 2010 Leave a comment

We outline a new systematic approach to extracting high-resolution information from HAADF–STEM images which will be beneficial to the characterization of beam sensitive materials. The idea is to treat several, possibly many low electron dose images with specially adapted digital image processing concepts at a minimum allowable spatial resolution. Our goal is to keep the overall cumulative electron dose as low as possible while still staying close to an acceptable level of physical resolution. We wrote a letter indicating the main conceptual imaging concepts and restoration methods that we believe are suitable for carrying out such a program and, in particular, allow one to correct special acquisition artifacts which result in blurring, aliasing, rastering distortions and noise.

Below you can find a preprint of that document and a pdf presentation about this work that I gave in the SEMS 2010 meeting, in Charleston, SC. Click on either image to download.

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